Resolving handwriting from background printing using photometric stereo

G. McGunnigle, M. J. Chantler

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

We propose a scheme to resolve handwriting from background printing. The scheme detects the indentations made by the pen in the paper. Photometric stereo is used to recover the surface; a matched filter and classifier are used to detect the stroke indentation. We assess the effect of uniform and textured backgrounds on the recovery of the stroke and test the scheme on practical examples. The technique was found to work well with script written with a ballpoint pen and could effectively suppress even dark and strongly textured backgrounds. We conclude that this is a useful complement to existing techniques for background removal and is especially useful when there is no template available. © 2003 Pattern Recognition Society. Published by Elsevier Science Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)1869-1879
Number of pages11
JournalPattern Recognition
Volume36
Issue number8
DOIs
Publication statusPublished - Aug 2003

Keywords

  • Background removal
  • Document image analysis
  • Off-line handwriting analysis
  • Photometric stereo
  • Preprocessing
  • Thresholding

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